Home / 87,590.89-120,875.40-47,304.66

Finding the Fourth Proportional to 87,590.89, 120,875.40 and 47,304.66

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Solution

The fourth proportional to 87,590.89, 120,875.40 and 47,304.66 is: 65,280.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,590.89 : 120,875.40 = 47,304.66 : x
  2. Step 2: Convert to fraction form
    87,590.89/120,875.40 = 47,304.66/x
  3. Step 3: Cross multiply
    87,590.89x = 120,875.40 × 47,304.66
  4. Step 4: Simplify right side
    87,590.89x = 5,717,969,239.90
  5. Step 5: Solve for x
    x = 5,717,969,239.90/87,590.89
  6. Step 6: Final answer
    x = 65,280.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.